25140343670 has 48 divisors (see below), whose sum is σ = 49732943760. Its totient is φ = 9144001152.

The previous prime is 25140343667. The next prime is 25140343673. The reversal of 25140343670 is 7634304152.

It is an interprime number because it is at equal distance from previous prime (25140343667) and next prime (25140343673).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25140343670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25140343673) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2216 + ... + 224244.

It is an arithmetic number, because the mean of its divisors is an integer number (1036102995).

Almost surely, 2^25140343670 is an apocalyptic number.

25140343670 is a deficient number, since it is larger than the sum of its proper divisors (24592600090).

25140343670 is a wasteful number, since it uses less digits than its factorization.

25140343670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222129 (or 222116 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 35.

The spelling of 25140343670 in words is "twenty-five billion, one hundred forty million, three hundred forty-three thousand, six hundred seventy".